Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 2, Issue 33, Pages 6695-6705Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tc00785a
Keywords
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Funding
- Dutch Polymer Institute (DPI)
- Royal Netherlands Academy of Science (KNAW)
- Netherlands Organization for Scientific Research (NWO)
- European Young Investigators Awards (EURYI)
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Current developments in the field of thermotropic chiral-nematic liquid crystals as sensors are discussed. These one dimensional photonic materials are based on low molecular weight liquid crystals and chiral-nematic polymeric networks. For both low molecular weight LCs and polymer networks, real-time and time integrating sensors have been realized. The response mechanism is either based on a change of helical twisting power of the dopant upon exposure to an analyte, or due to physical swelling, with a change of order in the liquid crystalline phase upon uptake of the analyte, causing the pitch to change. Sensors that respond to organic and water vapour, amines, water CO2, O-2, metal ions, pH, strain and temperature have been reported.
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